Galaxy Note 4 has just updated but now notifications wont appear in lock screen. How do I fix this?

[AC Question]

Galaxy note 4 has just updated but now notifications wont appear in lock screen. How do I fix this

My Galaxy Note 4 has just installed updates. Now things wont show in my lock screen ie. Message notifications and music player. Ive changed what needs to be changed in settings and its still not working???